How a swap is quoted and settled
RAH Swap compares venues, then sends one transaction you sign in your wallet. The platform fee comes out of the token you pay in, before the route runs.
Pick a pair and an amount
Choose the network, the token you pay, and the token you receive. The screen asks public quote sources for that exact pair. A quote is not a trade until you sign.
Compare routes
Each row names the venue and whether RAH can settle it. Some sources are quote-only: the calldata does not match an allowlisted router, or the contract can be upgraded under the same address. Those rows stay on the screen so you can see the price, and they cannot be signed.
Sign in your wallet
The executable route is the one whose target, selector, tokens, and amount match what FeeRouter will call. You approve the input token if it is not the native gas token, then confirm the swap. Minimum received and the deadline are checked on the router, not only inside the external venue.